* {
    position: relative;
    margin: 0;
    box-sizing: border-box;
}

html, body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

ul, ol, dl {
    list-style: none;
    margin-inline-start: 0;
    margin-block-start: 0;
}

.clearfix::after {
    display: block;
    content: "";
    clear: both;
}
